High frequency conductivity of the high-mobility two-dimensional electron gas

DOI PDF 被引用文献3件
  • P. J. Burke
    Condensed Matter Physics, California Institute of Technology (Caltech) Pasadena, California 91125
  • I. B. Spielman
    Condensed Matter Physics, California Institute of Technology (Caltech) Pasadena, California 91125
  • J. P. Eisenstein
    Condensed Matter Physics, California Institute of Technology (Caltech) Pasadena, California 91125
  • L. N. Pfeiffer
    Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974
  • K. W. West
    Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974

書誌事項

公開日
2000-02-07
DOI
  • 10.1063/1.125881
公開者
AIP Publishing

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説明

<jats:p>We measure the real and imaginary conductivity σ(k=0,ω) of a high-mobility two-dimensional electron gas (2DEG) system at frequencies below and above the momentum scattering rate. The imaginary part of the 2DEG impedance is observed to be inductive, consistent with the Drude model. Using this kinetic inductance, we construct a transmission line by capacitively coupling the 2DEG to an Al Schottky barrier gate separated by 5000 Å from the 2DEG. The measured wave velocity and temperature-dependent damping of this transmission line are in good agreement with a simple Drude model. Exciting these modes is equivalent to exciting a 2D plasma mode strongly modified by the interaction between the 2DEG and the gate.</jats:p>

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